//
//  AppDelegate.swift
//  WJ微博
//
//  Created by 王杰 on 2017/1/16.
//  Copyright © 2017年 WangJie. All rights reserved.
//

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?


    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

//        sleep(2)
        
        window = UIWindow()
        window?.backgroundColor = UIColor.white
        
        window?.rootViewController = WBMainViewController()
        
        window?.makeKeyAndVisible()
        
        // 加载应用信息
        loadAppInfo()
        
        return true
    }

    func applicationWillResignActive(_ application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(_ application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(_ application: UIApplication) {
        // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(_ application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(_ application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }
}

// extension 用于切分代码块,用法见WBBaseViewController 这个类
// MARK: - 从服务器加载应用程序信息
extension AppDelegate {
    
    func loadAppInfo() {
        
        // 异步请求获取数据
        // 队列调度线程
        DispatchQueue.global().async {
            
            // 1 url  获取main.json 的 路径
            let url = Bundle.main.url(forResource: "main.json", withExtension: nil)
            // 2 将数据写入磁盘
            let data = NSData(contentsOf: url!)
            // 获取沙盒目录
            let docDic = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] // 这里只所以写 [0] 而不是直接 .frist 这样来取数组的第0项，是因为后者这样写返回的类型是 String? 是可选的，后续使用又需要解包。
            let jsonPath = (docDic as NSString).appendingPathComponent("main.json")
            
            // 写入沙盒，存储. 等待程序下次启动使用
            data?.write(toFile: jsonPath, atomically: true)
   
            // 打印写入路径
            print("应用程序加载完毕 \(jsonPath)")
        }
    }
}

